EP 0903623 A1 19990324 - Binders for thermographic materials
Title (en)
Binders for thermographic materials
Title (de)
Bindemittel für thermographische Materialien
Title (fr)
Liants pour des produits thermographiques
Publication
Application
Priority
- EP 98202543 A 19980729
- EP 97202873 A 19970917
Abstract (en)
A substantially light-insensitive black and white thermographic material comprising a support and a thermosensitive element containing a substantially light-insensitive organic silver salt, a reducing agent therefor in thermal working relationship therewith and a binder, characterized in that the binder is a water-dispersible film-forming polymer having covalently bonded ionic groups and the thermographic material is thermally developable under substantially water-free conditions; and a process for producing the substantially light-insensitive black and white thermographic material comprising the steps of: producing an aqueous dispersion of the substantially light-insensitive organic silver salt; producing one or more aqueous coating compositions containing together the aqueous dispersion of the substantially light-insensitive organic silver salt, the reducing agent and the binder; and applying the one or more aqueous coating compositions to the support, thereby forming after drying the thermosensitive element.
IPC 1-7
IPC 8 full level
B41M 5/323 (2006.01); B41M 5/26 (2006.01); B41M 5/30 (2006.01); B41M 5/337 (2006.01); G03C 1/498 (2006.01)
CPC (source: EP)
G03C 1/4989 (2013.01)
Citation (search report)
- [XYD] EP 0678776 A2 19951025 - EASTMAN KODAK CO [US]
- [Y] EP 0226953 A2 19870701 - AGFA GEVAERT AG [DE]
- [DA] WO 9416361 A1 19940721 - LABELON CORP [US]
- [DA] DE 3635441 A1 19870507 - FUJI PHOTO FILM CO LTD [JP]
- [XYD] DATABASE WPI Section Ch Week 8641, Derwent World Patents Index; Class A14, AN 86-267419, XP002069548
Designated contracting state (EPC)
BE DE FR GB
DOCDB simple family (publication)
EP 0903623 A1 19990324; EP 0903623 B1 20030514; DE 69814544 D1 20030618; DE 69814544 T2 20040318; JP H11170709 A 19990629
DOCDB simple family (application)
EP 98202543 A 19980729; DE 69814544 T 19980729; JP 28048298 A 19980917